Cramping 4DPO! Suggestions?

AvaMommy

Had severe cramping 4DPO (Yesterday) (FYI::: I'm going based off what the app says but I'm not sure if I ovulated on the day it said I would, could of ovulated earlier since period ended early this cycle) any opinions or suggestions on what could be happening? Couldn't do much baby dance during ovulation week but hopefully we hit the jack pot from the sign of cramping?